National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Fair

64°F

18°C

Humidity 34%
Wind Speed NE 6 mph
Barometer 30.04 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 May 7:55 pm CDT
Extended Forecast for

6 Miles NNE Castalia IA

  • Tonight

    Tonight: Clear, with a low around 41. North wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 74. South wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 54. South wind 11 to 13 mph, with gusts as high as 24 mph.

    Low: 54 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. South wind around 11 mph, with gusts as high as 21 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 54. South wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Breezy, with an east wind 9 to 18 mph, with gusts as high as 28 mph.

    High: 79 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Breezy, with a south wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Tonight
Clear, with a low around 41. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 74. South wind 5 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 54. South wind 11 to 13 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 82. South wind around 11 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 54. South wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 40%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Breezy, with an east wind 9 to 18 mph, with gusts as high as 28 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Breezy, with a south wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Breezy, with a south wind 21 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Breezy, with a southwest wind 17 to 22 mph becoming west 11 to 16 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 69. Northwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47. Northwest wind 5 to 9 mph.
Wednesday
Mostly sunny, with a high near 68. Northwest wind 5 to 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNE Castalia IA
 43.19°N 91.62°W
Last Update:
6:07 pm CDT May 13, 2026
Forecast Valid:
8pm CDT May 13, 2026-6pm CDT May 20, 2026
 
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Additional Resources

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Chance of Precipitation